vbl. sb. [Really formed directly on BLACKBERRY sb., but coming to be treated as a gerund, implying a vb. to blackberry. See NUTTING.] The gathering of blackberries.
1861. J. Bennet, Winter Medit., I. i. (1875), 35. The days when they go blackberrying.
1885. Miss Yonge, Two Sides Shield, i. We never had such a blackberrying.